Abstract: A latch for an aerodynamic structure is provided. The latch includes a transceiver and antenna coupled to a processor that receives signals indicative of speed. The processor causes the latch driver to be energized to release the latch to deploy the aerodynamic structure.

Abstract: Methods and systems for measuring a brake stroke of an air brake assembly utilize a sensor, such as an accelerometer, mountable on a movable component, such as a brake cam shaft, of the air brake assembly that is external of the brake chamber of the air brake assembly for detecting an acceleration of the movable component during a braking event. The sensor generates an output signal that depends on a magnitude of the detected acceleration, which is sent to a microcontroller coupled to the sensor. The microcontroller translates the sensor output signal to a value corresponding to a displacement of the movable component of the brake assembly during the braking event and calculates a brake stroke distance based on said value.

Abstract: A radio frequency (RF) communication device is provided comprising means for switching between a low current operating mode and a high current operating mode. The low current operating mode is optimized to conserve power while the RF device is awaiting a wake-up signal from an interrogator. The high current operating mode is optimized to provide antenna matching during backscatter communications so as to maximize the range of backscatter communication between the RF device and the interrogator. Further provided, is a system and method for optimizing power consumption and backscatter range within an RF communication device.